Video: Puas yog Nodejs qeeb?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Tam sim no Node. js web frameworks yog qeeb dua dua li siv qhov liab qab http module los ntawm qhov tseem ceeb ntawm 2. Qhov ntawd txhais tau tias koj tau txais tsawg dua ib nrab ntawm qhov kev thov ib ob piv rau qhov Node. js muaj peev xwm, uas tseem txhais tau hais tias txhua qhov kev thov yuav siv sijhawm ntev li ob zaug (hauv qee qhov ntev dua).
Ib yam li ntawd, yog vim li cas node thiaj li qeeb?
Node . js cov kev pab cuam tuaj yeem ua tau qeeb vim CPU lossis IO ua haujlwm ua haujlwm. Ntawm CPU sab, feem ntau muaj "txoj kev kub" (ib txoj cai uas tau mus xyuas ntau zaus) uas tsis zoo. Sau, a qeeb daim ntawv thov yuav tsis muaj dab tsi ua nrog Node ; xwb, ib qho kev pab sab nraud, xws li cov lus nug database lossis a qeeb API hu, tej zaum yuav tsis optimized.
Ib yam li ntawd, Nodejs nyuaj npaum li cas? Node . js platform muaj JavaScript ntawm lub plawv uas txhais nws cov theem nyuaj. JS feem ntau yog teev nyob rau hauv qhov zoo tshaj plaws starters rau beginner-programmers vim nws yooj yim syntax thiab txhais xwm.
Kuj Paub, yog Nodejs ceev?
Node siv Chrome's V8 engine, uas yog JIT compiler. Qhov no ua rau nws ncaj ncees ceev --tsis ntseeg li ceev raws li ib tug compiled lus, tab sis ceev . Zoo JITs tuaj yeem nyob rau hauv qhov xwm txheej yog, heev ceev --PyPy (Python JIT) yog tiag tiag li ceev raws li C hauv qee kis. Yog li nws yuav ncaj ncees ceev rau tej yam dej num.
Node js tsis zoo rau dab tsi?
Tsis haum rau Heavy-Computing Apps Node . js tseem tsis tau txhawb nqa multi-threaded programming. Nws muaj peev xwm ua hauj lwm hauv kev siv ntau dua li Ruby, tab sis nws yog tsis haum rau ua kev suav ua haujlwm ntev. Kev suav hnyav thaiv cov lus thov tuaj, uas tuaj yeem ua rau txo qis kev ua haujlwm.
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